The world population is projected to reach 9.9 billion by 2050, with significant regional differences, including Africa's population doubling and Europe experiencing declines. The population of the United States is expected to rise by 23 percent to 398 million.
A recent study published in Demography found that fathers are less likely to cohabitate with infants who have health issues. The research suggests that low-income children in poor health face significant challenges in maintaining a stable family structure.
A study found that Mexican-born Hispanics returning to Mexico experience lower mortality rates, adding up to five to eight years of extra life expectancy at age 45. The analysis suggests that return migration is a key factor in this anomaly.
According to a study by Fred Pampel, measures of gender equality do not explain the gap between men's and women's lung-cancer death rates. The gap is best explained historically, with women's smoking following men's on the upswing after a typical lag of around three decades.
A California study reveals that Spanish-speaking children are disproportionately concentrated in low-income schools, which hinders their upward mobility. This concentration is due to the growing numbers of limited-English Hispanic students, who face institutional barriers and demographic imbalances.
According to a study by Maria Krysan, white residents often blame African Americans for problems in poor urban neighborhoods, despite stable black middle-class areas existing. Whites are more likely to move due to concerns about crime and property values than education level or personal comfort.